# SDR 2007FA0000089

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 6, 2004
- Submitted: January 30, 2007
- Operation: General aviation
- Aircraft: N159AD
- Make and model: Fokker F.28 MK4000
- Registry model: [Fokker F.28 MK4000](https://openairdocs.org/model/fokker-f-28-mk4000) (OpenAirDocs)
- Aircraft serial: 11227
- System (JASC): [2711 · Aileron Tab Control System](https://openairdocs.org/jasc/2711)
- Part: O-Ring
- Part number: 1075010
- Condition: Leaking
- Location: Aileron Tab
- Stage of operation: NR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007FA0000089

## Discrepancy

AT 1004Z, AIRCRAFT DEPARTED, APPROX 30 MIN INTO FLIGHT, PILOTS CALL PTK OPS RADIO AND REPORTED TOTAL LOSS OF NR 2 HYD SYSTEM FLUID.  AIRCRAFT RETURNED TO DEPARTURE.  AFTER ARRIVING, THE FLIGHT MECHANIC INSPECTED THE AIRCRAFT AND FOUND THE RT AILERON TAB LOCK OUT ACTUATOR FILTER O-RING HAD RUPTURED.  (K)

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